JPH05223388A - Room heater/cooler - Google Patents
Room heater/coolerInfo
- Publication number
- JPH05223388A JPH05223388A JP2353292A JP2353292A JPH05223388A JP H05223388 A JPH05223388 A JP H05223388A JP 2353292 A JP2353292 A JP 2353292A JP 2353292 A JP2353292 A JP 2353292A JP H05223388 A JPH05223388 A JP H05223388A
- Authority
- JP
- Japan
- Prior art keywords
- refrigerant
- heat exchanger
- heating
- valve
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、室内外のユニットを冷
媒配管接続して暖冷房を行う装置において、特に室外ユ
ニットに冷媒加熱器を有し、燃焼により冷媒を加熱し、
室内ユニットへ熱搬送して暖房を行う暖冷房機に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for heating / cooling by connecting a refrigerant pipe to an indoor / outdoor unit, and in particular, has a refrigerant heater in the outdoor unit to heat the refrigerant by combustion.
The present invention relates to a heating / cooling machine that conveys heat to an indoor unit for heating.
【０００２】[0002]
【従来の技術】従来、この種の暖冷房機は、図２に示す
ように、圧縮機１、第１逆止弁２、四方切換え弁３、室
外側熱交換器４、減圧機構１５、第１電磁弁１６、室内
側熱交換器７、前記四方切換え弁３、逆止弁１７、アキ
ュムレータ８を環状に連結して冷媒循環回路を構成し、
この冷媒循環回路に、一端が室内側熱交換器７と第１電
磁弁１６との間に接続され、他端が逆止弁１７とアキュ
ムレータ８との間に接続された冷媒加熱回路を設け、こ
の冷媒加熱回路を、冷媒加熱時に開放する第２電磁弁１
８と、冷媒を加熱する冷媒加熱器１０と、補助アキュム
レータ１９からなる構成とし、さらに圧縮機１の高圧側
配管と低圧側配管をバイパスする冷媒加熱時の冷媒循環
量調節用の第３電磁弁２０を設けていた。2. Description of the Related Art Conventionally, as shown in FIG. 2, a heating / cooling machine of this type has a compressor 1, a first check valve 2, a four-way switching valve 3, an outdoor heat exchanger 4, a pressure reducing mechanism 15, and a 1 Solenoid valve 16, indoor heat exchanger 7, four-way switching valve 3, check valve 17, accumulator 8 are annularly connected to form a refrigerant circulation circuit,
The refrigerant circulation circuit is provided with a refrigerant heating circuit having one end connected between the indoor heat exchanger 7 and the first electromagnetic valve 16 and the other end connected between the check valve 17 and the accumulator 8. The second solenoid valve 1 that opens this refrigerant heating circuit when heating the refrigerant.
8, a refrigerant heater 10 for heating the refrigerant, and an auxiliary accumulator 19, and a third solenoid valve for adjusting the refrigerant circulation amount at the time of refrigerant heating that bypasses the high-pressure side pipe and the low-pressure side pipe of the compressor 1. Twenty.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、冷媒加熱に要する燃料費の他に圧縮機１の
熱搬送に要する電力消費が大きいため、暖房時のランニ
ングコストが高いと言う問題があった。また、暖房時に
は圧縮機１は主に熱搬送手段としての機能しかなく、暖
房開始時にはヒートポンプのように定格能力以上の出力
が得られることがないため、室内を早く暖める能力とし
ては十分ではなかった。However, in the above-described conventional structure, the running cost during heating is high because the electric power consumption required for heat transfer of the compressor 1 is large in addition to the fuel cost required for heating the refrigerant. there were. Further, since the compressor 1 mainly functions only as a heat transfer means during heating and does not provide an output exceeding the rated capacity like a heat pump at the time of starting heating, it is not sufficient as an ability to warm the room quickly. ..
【０００４】本発明は上記従来の問題を解消するもの
で、冷媒加熱時の電力消費を低減し、暖房時のランニン
グコストを減少し、かつ、暖房開始時の出力を上げ、室
内を早く暖める暖冷房機を提供することを目的とする。The present invention solves the above-mentioned problems of the prior art by reducing the power consumption when heating the refrigerant, reducing the running cost during heating, and increasing the output at the start of heating to warm the room quickly. The purpose is to provide an air conditioner.
【０００５】[0005]
【課題を解決するための手段】本発明は上記目的を達成
するために、アキュムレータを有し、冷房時および暖房
開始時に運転される圧縮機、第１逆止弁、四方切換え
弁、室外側熱交換器、第２逆止弁、第１減圧機構、室内
側熱交換器、前記四方切換え弁、前記アキュムレータを
順次環状に連結し、低沸点の冷媒を作動媒体として用い
た冷媒循環回路を構成し、第１減圧機構と室内側熱交換
器との間で分岐し、室内側熱交換器と四方切換え弁との
間に至る管上に受液器および暖房時に冷媒を加熱する冷
媒加熱器、第３逆止弁を直列に設け、受液器内部に暖房
時に運転される冷媒ポンプを設け、冷媒ポンプの吸入部
は受液器内下部にあり、冷媒ポンプの吐出管は冷媒加熱
器の冷媒流入口に接続し、第１減圧機構と室内側熱交換
器との間で分岐し、室外側熱交換器と第１逆止弁との間
に至る管上に暖房開始時のみ開く電磁弁および第２減圧
機構を直列に設けた構成としている。In order to achieve the above object, the present invention has a compressor which has an accumulator and is operated at the time of cooling and at the start of heating, a first check valve, a four-way switching valve, and an outdoor heat source. The exchanger, the second check valve, the first pressure reducing mechanism, the indoor heat exchanger, the four-way switching valve, and the accumulator are sequentially connected in an annular shape to form a refrigerant circulation circuit using a low boiling point refrigerant as a working medium. , A refrigerant heater for branching between the first pressure reducing mechanism and the indoor heat exchanger, which is provided on a pipe extending between the indoor heat exchanger and the four-way switching valve, and a refrigerant heater for heating the refrigerant during heating, 3 Check valves are provided in series, a refrigerant pump that is operated during heating is installed inside the receiver, the suction part of the refrigerant pump is located inside the receiver, and the discharge pipe of the refrigerant pump is the refrigerant flow of the refrigerant heater. Connected to the inlet, branched between the first pressure reducing mechanism and the indoor heat exchanger, It has a configuration in which a solenoid valve and a second pressure reduction mechanism opens on the tube leading between the outer heat exchanger and the first check valve only when the heating start to the series.
【０００６】[0006]
【作用】上記した構成において、冷媒加熱時には、電磁
弁を閉じ、冷媒ポンプを稼働させ、受液器内の液冷媒を
冷媒加熱器内へ送ると、バーナの燃焼熱により冷媒加熱
器内で沸騰しガス化した冷媒は第１逆止弁、第２逆止弁
があるので、第３逆止弁を通り室内側熱交換器へ流入
し、放熱凝縮し液冷媒となり、受液器へ戻る。この冷媒
循環により冷媒加熱の暖房運転が行われることになる。
また、暖房開始時には、冷媒加熱運転を行うと同時に電
磁弁を開き、圧縮機を稼働させることにより、室内側熱
交換器で放熱凝縮し、受液器へ戻る液冷媒の一部は電磁
弁を通り、第２減圧機構を通り膨張ガス化し、室外側熱
交換器で大気熱を取り、四方切換え弁、アキュムレータ
を通り圧縮機に吸入され、圧縮機で圧縮高温ガスとなり
第１逆止弁、四方切換え弁を通り、冷媒加熱器で沸騰し
ガス化した冷媒と合流し、室内側熱交換器へ流入する冷
媒循環が行われる。一方、冷房を行うときは四方切換え
弁を切換え、電磁弁を閉じ、圧縮機を運転することによ
り、圧縮機で圧縮高温ガスとなった冷媒は第１逆止弁、
四方切換え弁を通り、室外側熱交換器へ流入し、放熱凝
縮して液冷媒となり、第２逆止弁を通り、第１減圧機構
を通り膨張ガス化し、室内側熱交換器で空気熱を取り、
四方切換え弁、アキュムレータを通り圧縮機に吸入され
る冷媒循環が行われる。In the above structure, when the refrigerant is heated, the electromagnetic valve is closed, the refrigerant pump is operated, and the liquid refrigerant in the receiver is sent into the refrigerant heater. When the refrigerant heats up, the combustion heat of the burner causes boiling in the refrigerant heater. Since the gasified refrigerant has the first check valve and the second check valve, the gasified refrigerant flows through the third check valve into the indoor heat exchanger, radiatively condenses and becomes liquid refrigerant, and returns to the liquid receiver. The heating operation for heating the refrigerant is performed by this circulation of the refrigerant.
Also, when heating starts, the refrigerant heating operation is performed and the solenoid valve is opened at the same time, and the compressor is operated to radiatively condense in the indoor heat exchanger and return to the receiver. Through the second decompression mechanism into expanded gas, atmospheric heat is taken up by the outdoor heat exchanger, and is sucked into the compressor through the four-way switching valve and accumulator, and becomes compressed high-temperature gas in the compressor and becomes the first check valve, four-way The refrigerant is circulated through the switching valve, merges with the gasified refrigerant that has boiled in the refrigerant heater, and flows into the indoor heat exchanger. On the other hand, when cooling is performed, the four-way switching valve is switched, the electromagnetic valve is closed, and the compressor is operated.
After passing through the four-way switching valve, it flows into the outdoor heat exchanger, radiates heat and condenses into liquid refrigerant, passes through the second check valve, passes through the first pressure reducing mechanism, becomes expanded gas, and heats the air in the indoor heat exchanger. take,
The refrigerant is circulated through the four-way switching valve and the accumulator to be sucked into the compressor.
【０００７】[0007]
【実施例】以下、本発明の一実施例について図１を参照
しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【０００８】図に示すように、圧縮機１、第１逆止弁
２、四方切換え弁３、室外側熱交換器４、第２逆止弁
５、第１減圧機構６、室内側熱交換器７、四方切換え弁
３、アキュムレータ８を順次環状に連結し、低沸点の冷
媒を作動媒体として用いた冷媒循環回路を構成し、第１
減圧機構６と室内側熱交換器７との間で分岐し、室内側
熱交換器７と四方切換え弁３との間に至る管上に受液器
９および冷媒加熱器１０、第３逆止弁１１を直列に設
け、受液器９内部に冷媒ポンプ１２を設け、冷媒ポンプ
１２の吸入部は受液器９内下部にあり、冷媒ポンプ１２
の吐出管は冷媒加熱器１０の冷媒流入口に接続し、第１
減圧機構６と室内側熱交換器７との間で分岐し、室外側
熱交換器４と第１逆止弁５との間に至る管上に電磁弁１
３および第２減圧機構１４を直列に設けた構成としてい
る。As shown in the figure, the compressor 1, the first check valve 2, the four-way switching valve 3, the outdoor heat exchanger 4, the second check valve 5, the first pressure reducing mechanism 6, the indoor heat exchanger. 7. The four-way switching valve 3 and the accumulator 8 are sequentially connected in an annular shape to form a refrigerant circulation circuit using a low boiling point refrigerant as a working medium.
The receiver 9 and the refrigerant heater 10 and the third check are branched on the pipe that branches between the pressure reducing mechanism 6 and the indoor heat exchanger 7 and that extends between the indoor heat exchanger 7 and the four-way switching valve 3. The valves 11 are provided in series, the refrigerant pump 12 is provided inside the liquid receiver 9, and the suction part of the refrigerant pump 12 is located in the lower part inside the liquid receiver 9 and
Is connected to the refrigerant inlet of the refrigerant heater 10, and
The solenoid valve 1 is provided on a pipe branching between the pressure reducing mechanism 6 and the indoor heat exchanger 7 and extending between the outdoor heat exchanger 4 and the first check valve 5.
3 and the second pressure reducing mechanism 14 are provided in series.
【０００９】上記構成において、冷媒加熱時には、電磁
弁１３を閉じ、冷媒ポンプ１２を稼働させ、受液器９内
の液冷媒を冷媒加熱器１０内へ送ると、バーナの燃焼熱
により冷媒加熱器１０内で沸騰しガス化した冷媒は第１
逆止弁２、第２逆止弁５があるので、第３逆止弁１１を
通り室内側熱交換器７へ流入し、放熱凝縮し液冷媒とな
り、受液器９へ戻る。この冷媒循環により冷媒加熱の暖
房運転が行われ、暖房時の熱搬送に要する電力消費は冷
媒ポンプ１２の稼働に要する電力ということになり、圧
縮機１の稼働に比べ著しくランニングコストが安くな
る。In the above structure, when the refrigerant is heated, the electromagnetic valve 13 is closed, the refrigerant pump 12 is operated, and the liquid refrigerant in the receiver 9 is sent into the refrigerant heater 10. Due to the combustion heat of the burner, the refrigerant heater is heated. Refrigerant gasified and boiled in 10 is the first
Since the check valve 2 and the second check valve 5 are provided, they flow into the indoor heat exchanger 7 through the third check valve 11, radiatively condense, become liquid refrigerant, and return to the liquid receiver 9. The heating operation for heating the refrigerant is performed by this refrigerant circulation, and the power consumption required for heat transfer during heating is the electric power required for operating the refrigerant pump 12, and the running cost is significantly lower than the operation of the compressor 1.
【００１０】また、暖房開始時には、冷媒加熱運転を行
うと同時に電磁弁１３を開き、圧縮機１を稼働させるこ
とにより、室内側熱交換器７で放熱凝縮し、受液器９へ
戻る液冷媒の一部は電磁弁１３を通り、第２減圧機構１
４を通り膨張ガス化し、室外側熱交換器４で大気熱を取
り、四方切換え弁３、アキュムレータ８を通り圧縮機１
に吸入され、圧縮機１で圧縮高温ガスとなり第１逆止弁
２、四方切換え弁３を通り、冷媒加熱器１０で沸騰しガ
ス化した冷媒と合流し、室内側熱交換器７へ流入する冷
媒循環が行われる。この冷媒循環により燃焼熱とヒート
ポンプによる大気熱とを両方同時に暖房に寄与させるこ
とができ、室内を早く暖めることができる。Further, when the heating is started, the solenoid valve 13 is opened at the same time when the refrigerant heating operation is performed, and the compressor 1 is operated to radiatively condense in the indoor heat exchanger 7 and return to the liquid receiver 9. Part of the second pressure reducing mechanism 1 passes through the solenoid valve 13.
4, expanded gasification is performed, atmospheric air is taken by the outdoor heat exchanger 4, and the compressor 1 is passed through the four-way switching valve 3 and the accumulator 8.
Is sucked into the compressor 1, becomes compressed hot gas in the compressor 1, passes through the first check valve 2 and the four-way switching valve 3, merges with the gasified refrigerant that has boiled in the refrigerant heater 10, and flows into the indoor heat exchanger 7. Refrigerant circulation is performed. By this circulation of the refrigerant, both combustion heat and atmospheric heat from the heat pump can be simultaneously contributed to heating, and the room can be warmed quickly.
【００１１】一方、冷房を行うときは四方切換え弁３を
切換え、電磁弁１３を閉じ、圧縮機１を運転することに
より、圧縮機１で圧縮高温ガスとなった冷媒は第１逆止
弁２、四方切換え弁３を通り、室外側熱交換器４へ流入
し、放熱凝縮して液冷媒となり、第２逆止弁５を通り、
第１減圧機構６を通り膨張ガス化し、室内側熱交換器７
で空気熱を取り、四方切換え弁３、アキュムレータ８を
通り圧縮機に吸入される冷媒循環が行われる。On the other hand, when cooling is performed, the four-way switching valve 3 is switched, the electromagnetic valve 13 is closed, and the compressor 1 is operated, so that the refrigerant that has become hot compressed gas in the compressor 1 is the first check valve 2 , Through the four-way switching valve 3, flows into the outdoor heat exchanger 4, radiatively condenses and becomes a liquid refrigerant, passes through the second check valve 5,
The gas is expanded into gas through the first pressure reducing mechanism 6, and the indoor heat exchanger 7
The heat of air is taken in and the refrigerant is circulated through the four-way switching valve 3 and the accumulator 8 to be sucked into the compressor.
【００１２】[0012]
【発明の効果】以上のように本発明の暖冷房機によれ
ば、次の効果が得られる。 （１）圧縮機、第１逆止弁、四方切換え弁、室外側熱交
換器、第２逆止弁、第１減圧機構、室内側熱交換器、前
記四方切換え弁、アキュムレータを順次環状に連結し、
低沸点の冷媒を作動媒体として用いた冷媒循環回路を構
成し、第１減圧機構と室内側熱交換器との間で分岐し、
室内側熱交換器と四方切換え弁との間に至る管上に受液
器および冷媒加熱器、第３逆止弁を直列に設け、受液器
内部に冷媒ポンプを設け、冷媒ポンプの吸入部は受液器
内下部にあり、冷媒ポンプの吐出管は冷媒加熱器の冷媒
流入口に接続し、第１減圧機構と室内側熱交換器との間
で分岐し、室外側熱交換器と第１逆止弁との間に至る管
上に電磁弁および第２減圧機構を直列に設けた構成と
し、冷媒加熱時には、電磁弁を閉じ、冷媒ポンプを稼働
させ、受液器内の液冷媒を冷媒加熱器内へ送ると、バー
ナの燃焼熱により冷媒加熱器内で沸騰しガス化した冷媒
は第１逆止弁、第２逆止弁があるので、第３逆止弁を通
り室内側熱交換器へ流入し、放熱凝縮し液冷媒となり、
受液器へ戻る冷媒循環が行われ、暖房時の熱搬送に要す
る電力消費は冷媒ポンプの稼働に要する電力ということ
になり、圧縮機の稼働に比べ著しくランニングコストが
安くなる。 （２）暖房開始時には、冷媒加熱運転を行うと同時に電
磁弁を開き、圧縮機を稼働させることにより、室内側熱
交換器で放熱凝縮し、受液器へ戻る液冷媒の一部は電磁
弁を通り、第２減圧機構を通り膨張ガス化し、室外側熱
交換器で大気熱を取り、四方切換え弁、アキュムレータ
を通り圧縮機に吸入され、圧縮機で圧縮高温ガスとなり
第１逆止弁、四方切換え弁を通り、冷媒加熱器で沸騰し
ガス化した冷媒と合流し、室内側熱交換器へ流入する冷
媒循環が行われ、燃焼熱とヒートポンプによる大気熱と
を両方同時に暖房に寄与させることができ、室内を早く
暖めることができる。As described above, according to the heating / cooling machine of the present invention, the following effects can be obtained. (1) The compressor, the first check valve, the four-way switching valve, the outdoor heat exchanger, the second check valve, the first pressure reducing mechanism, the indoor heat exchanger, the four-way switching valve, and the accumulator are sequentially connected in an annular shape. Then
A refrigerant circulation circuit that uses a low boiling point refrigerant as a working medium is branched between the first pressure reducing mechanism and the indoor heat exchanger,
A receiver, a refrigerant heater, and a third check valve are provided in series on a pipe extending between the indoor heat exchanger and the four-way switching valve, a refrigerant pump is provided inside the receiver, and a suction portion of the refrigerant pump is provided. Is in the lower part inside the receiver, the discharge pipe of the refrigerant pump is connected to the refrigerant inlet of the refrigerant heater, branches between the first pressure reducing mechanism and the indoor heat exchanger, and is connected to the outdoor heat exchanger and the first heat exchanger. The solenoid valve and the second pressure reducing mechanism are provided in series on the pipe leading to the check valve 1. When the refrigerant is heated, the solenoid valve is closed, the refrigerant pump is operated, and the liquid refrigerant in the receiver is removed. When sent to the refrigerant heater, the refrigerant that boiled and gasified in the refrigerant heater due to the combustion heat of the burner has the first check valve and the second check valve. It flows into the exchanger, dissipates heat and condenses into liquid refrigerant,
Refrigerant circulation back to the liquid receiver is performed, and the electric power consumption required for heat transfer during heating is the electric power required for operating the refrigerant pump, which significantly reduces the running cost compared to the operation of the compressor. (2) At the start of heating, the solenoid valve is opened at the same time as the refrigerant heating operation, and the compressor is operated to radiatively condense in the indoor heat exchanger and return to the receiver. Through the second decompression mechanism into expanded gas, atmospheric heat is taken up by the outdoor heat exchanger, and is sucked into the compressor through the four-way switching valve and the accumulator, and becomes compressed hot gas in the compressor to become the first check valve, Refrigerant circulation that passes through the four-way switching valve, merges with the gasified refrigerant that has boiled in the refrigerant heater, and then flows into the indoor heat exchanger, and contributes to both heating of combustion heat and atmospheric heat from the heat pump at the same time. It is possible to warm the room quickly.
【図１】本発明の一実施例における暖冷房機のシステム
構成図FIG. 1 is a system configuration diagram of a heating / cooling machine according to an embodiment of the present invention.
【図２】従来の暖冷房機のシステム構成図FIG. 2 is a system configuration diagram of a conventional heating and cooling machine.
１ 圧縮機 ２ 第１逆止弁 ３ 四方切換え弁 ４ 室外側熱交換器 ５ 第２逆止弁 ６ 第１減圧機構 ７ 室外側熱交換器 ８ アキュムレータ ９ 受液器 １０ 冷媒加熱器 １１ 第３逆止弁 １２ 冷媒ポンプ １３ 電磁弁 １４ 第２減圧機構 1 Compressor 2 1st check valve 3 4 way switching valve 4 Outdoor heat exchanger 5 2nd check valve 6 1st pressure reduction mechanism 7 Outdoor heat exchanger 8 Accumulator 9 Liquid receiver 10 Refrigerant heater 11 3rd reverse Stop valve 12 Refrigerant pump 13 Solenoid valve 14 Second pressure reducing mechanism
Claims (1)
開始時に運転される圧縮機、第１逆止弁、四方切換え
弁、室外側熱交換器、第２逆止弁、第１減圧機構、室内
側熱交換器、前記四方切換え弁、前記アキュムレータを
順次環状に連結し、低沸点の冷媒を作動媒体として用い
た冷媒循環回路を構成し、前記第１減圧機構と前記室内
側熱交換器との間で分岐し、前記室内側熱交換器と前記
四方切換え弁との間に至る管上に受液器および暖房時に
冷媒を加熱する冷媒加熱器、第３逆止弁を直列に設け、
前記受液器内部に暖房時に運転される冷媒ポンプを設
け、前記冷媒ポンプの吸入部は前記受液器内下部にあ
り、前記冷媒ポンプの吐出管は前記冷媒加熱器の冷媒流
入口に接続し、前記第１減圧機構と前記室内側熱交換器
との間で分岐し、前記室外側熱交換器と前記第１逆止弁
との間に至る管上に暖房開始時のみ開く電磁弁および第
２減圧機構を直列に設けた暖冷房機。1. A compressor having an accumulator, which is operated at the time of cooling and at the start of heating, a first check valve, a four-way switching valve, an outdoor heat exchanger, a second check valve, a first pressure reducing mechanism, and a room. An inner heat exchanger, the four-way switching valve, and the accumulator are sequentially connected in an annular manner to form a refrigerant circulation circuit using a low boiling point refrigerant as a working medium, and the first pressure reducing mechanism and the indoor heat exchanger And a refrigerant heater for heating the refrigerant during heating, and a third check valve are provided in series on a pipe that branches between the indoor heat exchanger and the four-way switching valve.
A refrigerant pump that is operated during heating is provided inside the liquid receiver, a suction portion of the refrigerant pump is located in a lower portion inside the liquid receiver, and a discharge pipe of the refrigerant pump is connected to a refrigerant inlet of the refrigerant heater. A solenoid valve that branches between the first pressure reducing mechanism and the indoor heat exchanger and that opens only when heating starts on a pipe that extends between the outdoor heat exchanger and the first check valve; 2 A heating / cooling machine equipped with a decompression mechanism in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2353292A JPH05223388A (en) | 1992-02-10 | 1992-02-10 | Room heater/cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2353292A JPH05223388A (en) | 1992-02-10 | 1992-02-10 | Room heater/cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05223388A true JPH05223388A (en) | 1993-08-31 |
Family
ID=12113068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2353292A Pending JPH05223388A (en) | 1992-02-10 | 1992-02-10 | Room heater/cooler |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05223388A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147582A (en) * | 2003-11-18 | 2005-06-09 | Daikin Ind Ltd | Air conditioner |
| CN106871470A (en) * | 2017-02-05 | 2017-06-20 | 广东美的暖通设备有限公司 | The pressure regulating method of air-conditioning system and air-conditioning system |
| CN110940136A (en) * | 2019-12-10 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator refrigerating system and defrosting control method thereof |
-
1992
- 1992-02-10 JP JP2353292A patent/JPH05223388A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005147582A (en) * | 2003-11-18 | 2005-06-09 | Daikin Ind Ltd | Air conditioner |
| CN106871470A (en) * | 2017-02-05 | 2017-06-20 | 广东美的暖通设备有限公司 | The pressure regulating method of air-conditioning system and air-conditioning system |
| CN110940136A (en) * | 2019-12-10 | 2020-03-31 | 珠海格力电器股份有限公司 | Refrigerator refrigerating system and defrosting control method thereof |
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